My work truck is a 2005 Silverado 4.8L LS engine with 200k miles 8700 engine hours..... hoping to get 500k+ out of it. It always got 3k oil changes with the cheapest conventional bulk oil up until I purchased it from my employer and now I'm running full synthetic currently m1 EP HM 5w30. It has an oil life monitor which I will take into consideration but it can't take into account the amount of dust clouds I'm driving through and idling in at construction sites. I work for a surveyor and do all our construction layout, so most of the trucks time is spent in new construction zone's and it breathes in a lot of dirt. I made sure the air filter was sealed up well, and plan on upgrading the filter to something better next time it's due. I'm just undecided in how much I need to shorten my oil changes because of the dusty environment and idling time with ac or heat turned on.
After this oil change going into the winter I'm switching to m1 0w40 FS for the extreme cold starts.
I'm looking for any suggestions of OCI considering I want this engine to last 500k+ or as long as I can keep the truck from rusting out....I sanded, primed and painted the frame and lines and then sprayed with fluid film..so I'm doing what I can to keep it long term.
After this oil change going into the winter I'm switching to m1 0w40 FS for the extreme cold starts.
I'm looking for any suggestions of OCI considering I want this engine to last 500k+ or as long as I can keep the truck from rusting out....I sanded, primed and painted the frame and lines and then sprayed with fluid film..so I'm doing what I can to keep it long term.